TY  - RPRT
TI  - Lithology, thickness, and extent of hydrogeologic units underlying the East Portland area, Oregon
AU  - S.V. Hartford
AU  - W. D. McFarland
PY  - 1989
DO  - 10.3133/wri884110
UR  - https://pubs.usgs.gov/publication/wri884110
ID  - wri884110
ER  -